Release Message:  A nutty professor (Sterling Holloway) uses his time machine to send Clark, Lois, Jimmy, Perry and himself back to 50,000 B.C., along with a notorious gangster who decides he likes prehistoric times.

Description:  A nutty professor uses his time machine to send Clark, Lois, Jimmy, Perry and himself back to 50,000 B.C., along with a notorious gangster who decides he likes prehistoric times.